Sharing information

I'm working on how we share information inside our organisation. Some information is available on our intranet, but it tends to be information about the IT department that people need to know. Using an intranet is a very "IT" thing to do. It occurred to me that in any given organisation, not necessarily ours, that various departments could use various methods:

• IT create an intranet
• Maintenance/Facilities Management put a noticeboard on the wall
• Personnel hold an information sharing meeting
• Catering hold a meeting in the dining room with free cake
• Finance put a message on the bottom of a financial statement
• Marketing/PR create a glossy leaflet and circulate it
• Fundraising send an up-beat email
• Legal send a sternly worded email with lots of bold bits
• Cleaning leave a note on your desk

Of course, the method of sharing should be appropriate to the audience, not the author of the information. What other methods could other departments use?